barker



2 Sheets-Sheet 1.

Patented June 2,1891.

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W. T. BARKER.

AUTOMATIC GRAIN WEIGHING MACHINE.

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W. T. BARKER.

AUTOMATIC GRAIN WEIGHlNG MACHINE. No. 453,460. Patented June 2,1891.

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UNITED STATES PATENT OFFICE.

INTELLS T. BARKER, OF NASHVILLE, MICHIGAN, ASSIGNOR TO AUTOMATIC SCALE COMPANY, OF SAME PLACE.

THE BARKER AUTOMATIC GRAIN-WEIGHING MACHINE.

SPECIFICATION forming part of Letters Patent No. 453,460, dated J une 2, 1891.

Application filed November 18, 1890. Serial No. 371,862. (No model.) y

To ctZZ whom t may concern.'

Be it known that I, WELLS T. BARKER, a citizen of the United States, residing at Nashville, in the county of Barry and State of Michigan, have invented certain'new and useful Improvement-s in Automatic Grain-VVeighing Machines; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to automatic grainweighing machines, and more especially to the class of such machines for which I secured Letters 'Patent of the United States No. 421,850 on February 1S, 1890, and which are adapted to automatically weigh a stream of grain or other like substance descending in a continuous stream through a vertical spout.

The object of this invention is to improve upon the construction of such machines by devices for overcoming, so far as possible, the friction of the coacting parts in contact and secure more accurate working of the mechanism for obtaining more accurate results; and it consists in the construction, combination, and arrangement of the various parts hereinafter described, and particularly pointed out in the claims, reference being had to the accompanying` drawings, wherein- Figure l is a side elevation of a device embodying my invention with some of the parts broken away to show details; Fig. 2, a plan of the same, and Fig. 3 a detail of the spouts and valve mechanism in vertical section.

Like letters and figures of reference indicate like parts throughout the drawings.

It will be observed that the machine consists, essentially, of eounterbalanoing mechanism or parts arranged in pairs and adapted to act alternately upon each side of a centrally-arranged feeding device, most of the parts being in duplicate. Therefore to avoid repetitions when one of the parts represented 4 by letter is mentioned its corresponding part will be understood.

A represents a frame, preferably of iron, integral, with parallel sides equidistant at its central portion, connected together by cross-bars A', having extensions forming lugs for suspending it from suitable supports, and

having its ends approaching each other and connected at theirextremities. To this frame is attached the weighing mechanism, so as to be suspended therefrom. Centrally through the frame passes a vertical spout E, through which the grain descends, the lower portion being laterally enlarged upon each side at E", forming an expanded throat, Within which are arranged the valves TI T, Fig. 3, pivoted upon rock-shafts T T, arranged across the spout in such a manner as to intercept and deflect the stream of descending grain from side to side. At the lower end of the spout E is arranged the inverted hopper E, having the bridge E, with oppositely-inclined surfaces, in such a manner as to furnish a double outlet for the spout upon each side thereof into the buckets C C, respectively, arranged upon each side underneath the respective outlets.

Upon each side of the spout E are arranged scale-beams B B, the interior portions being double, with parallel sides, having two points of suspension each from the frame A, Fig. 2, and having hooks J at their inner ends and a downwardly and outwardly turned arm, near the outer end of which are arranged Weights D, having adjusting-screw D and detachable supplementary weight D the surfaces in contact having the tongue and groove D for keeping them in line with and a bolt and nut (not lettered) for holding them to each other. The scale-beams have also lugs at each side, with sharp edges forming knife-edge pivots engaging with eyes depending from frame A, by which they are suspended therefrom, and forward of said lugs other lugs engaging the bails 9 of the buckets, which have also two points of suspension, one on each side of said scale-beams. Pivoted to said bails 9 are trip-latches 6, (provided with rods V, having hooks V to engage bell-cranks \V,) engaging the sides of the buckets C, which are eccentrioally pivoted in such a manner as to turn bottom up when full, and said latch is disengaged, and are provided with counterbalancing-weights C', which cause them to assume the vertical position when empty. Said bails 9 also have steadying-bars S pivoted thereto and detachably attached to guide-arms 7, proj ecting from IOO the lower' edge of E', which serve to keep said bails from swinging while the buckets are being emptied, and the outer ends of scale-beams B are limited in downward movement and prevented from swinging by pendent loops 5, attached to the end of the frame A.

Iivoted to the spout E by a bolt G is a tilting frame G, and pivoted to and pendent from each end of said frame are the shifting gates F F, arranged upon each side of and adapted to alternately pass diagonally across the lower end of said spout for deilecting the stream of grain into the buckets G, respectively. Each gate has a guide-bar I-I pivoted at its lower end to the lower end of the gate l and at its upper end to the frame R, and having knife-edge pivots I-I;

The rocking frame G is operatively connected to the scale-beams by pendent links I, adapted to be engaged by hooks J at their lower ends and pivoted to said frame at their upper ends, whereby when the weight of the grain in the bucket C causes the scale-beam to settle the rocking frame G is depressed upon that side.

Pivoted at each end of the rocking frame G are bows N N, adapted to engage the hooks 2 on the weighted bell-crank trip-levers lV, and connected together by bars M, having their ends pivoted thereto in such a manner as to cause said hooks to move in unison. Said bars M are connected laterally by crossbars P, adapted to be engaged by pawls O, pivoted to the spout E, for limiting the upward movement of the frame G, as well as shifting the inclination of the loops N. Said rocking frame G is also provided with a shifting weighted lever K, pivoted upon a knifeedge pivot L on a pendent arm secured to frame G, its lateral movement being limited by set-screws arranged upon each side, as shown in Fig. l. Pivoted to frame A at each end of said rocking frame G are the weighted bell-crank trip-levers IV, having their perpendicular and horizontal arms connected by integral curved arms l and 8, and having hooks 2 and weights K and set-screws et et for limiting the downward movement of said horizontal arms. Rods U, having hooks U to engage the horizontal arms of the lever IV, are attached to the scale-beams B for returning said lever V to position, and pivoted to the frame A are levers R, having pivoted to their outer ends pendent hooks Q, which also-engage thescale-beams, and the other ends are connected to the rock-shafts T T through levers S and T', whereby the settling of the scale-beams produces a partial revolution of the shafts for vibrating the valves T T in the throat of the spout E.

It will now be observed that my improvement consists in eliminating from the mechanism of my former machine all of the sliding movements of parts upon each other, thereby greatly reducing the friction of the machine, and that the machine operates pivotally and without frictional Contact of coacting elements.

lVhat I claim as new, and desire to secure by Letters Patent, is-

l. The main frame A, having parallel sides equidistant at its central portion, connected together by cross-bars A', having extensions forming lugs for suspension and endportions -extending beyond the cross-bars at each end,

and having scale-beams and other weighing instrumentalities suspended therefrom, in combination with spout E, centrally arranged therein, substantially as and for the purposes set forth.

2. The combination,with aframe A, adapted to be suspended in the manner described, and a central spout E, of the rocking frame G, pivoted to the spout E and having the gates F pivoted at each end, the extension E', having bridge E, and guide-bars II, pivoted at their lower ends to the gates and at their upper ends to said frame, substruitiallyA as set forth.

3. In an automatic grain-weighing machine, the spout E, having its lower portion eX- panded laterally, as `at E, and the Vibrating valves T T", arranged within said expanded portion, substantially as set forth.

al.. The combination, with the frame A and spout E, provided with valves T T, of scalebeams B, pivoted to frame A, levers R, hooks Q, connecting said levers and beams, levers S and T', and rock-shafts T, arranged substantially as and for the purposes set forth.

5. In an automatic grain-weighing machine, the combination of a centrally-arranged vertical spout E, provided with vibrating valves T T in the throat thereof, and an extension E', having bridge E, and the rocking frame G, having gates F pivoted at each end, arranged substantially as set forth.

6. In an automatic grain-weighing machine, the combination of frame A, spout E, rocking frame G, shifting-lever K, vgates F, scalebeams B, pivoted to said frame A, valves T T, connected to scale-beams B, as herein set forth, buckets C, suspended from said scalebeams, links I, and hooks .I on the end of the scale-beams, arranged substantially as described, and for the purposes set forth.

7. The combination, with the frame A,provided with means of suspension, as set forth, and spout E, arranged as set forth, of the rocking frame G, gates F, weighted lever K, links N, pivoted at each end of the frame, parallel connecting-bars H, and bell-crank levers IV, having hooks Q, and scale-beams B, pivoted to the frame, buckets C, suspended from scale -beams, trip-latch G, and rods V, having hooks V connecting the latch and levers IV, substantially as set forth. y

8. In automatic grain-weighing machines, the frame A, having means of suspension, as herein set forth, the central spout E, having the expanded throat E, the extension E', bridge E, and the Valves T T, in combination with the rocking frame G, having the IOC IIO

G, the loops N, connecting-bars M, cross-bars P, pawls O, and levers XV, having hooks 2 and connected to latches 6, substantially as and for the purposes set forth. C

In testimony whereof I affix my signature in presence of two Witnesses.

VELLS T. BARKER.

Witnesses:

' C. A. I-IOUGH, C. F. HOUGH. 

